Preserve schedule principal and invocation ID through proxy telemetry and session history

[mostlydev]

Problem

Scheduled Clawdapus invocations cannot currently be measured as authoritative outer turns. In Tiverton House issue #87, both claw compose logs cllama and .claw-session-history/<agent>/history.jsonl were inspected for a full regular session. Neither surface preserved a schedule principal/name or stable invocation ID.

Available records can count:

• tool_manifest_loaded attempts (only for the retained proxy-log window),
• mediated provider request / response rounds,
• successful provider-history final records,
• visible versus [SILENT] finals,
• managed state actions.

The scheduled message can sometimes be matched exactly back to x-claw.invoke[].message, but retries and event wakes reuse that text. Without a stable invocation key, successful final records cannot be deduplicated into completed outer turns, and clock-minute mapping is only a heuristic.

Requested contract

Generate one stable invocation ID at the schedule/event wake boundary and preserve it, together with the schedule principal/name when applicable, through:

1. agent invocation environment/envelope;
2. cllama structured records (tool_manifest_loaded, feed records, request, response, error, interventions);
3. .claw-session-history records;
4. audit/export surfaces.

The ID must remain constant across mediated tool rounds, retries, and failover for one outer invocation, and change for a new scheduled/event/user invocation.

Suggested fields:

{
  "invocation_id": "...",
  "invocation_kind": "schedule|event|discord|manual",
  "schedule_principal": "weston/Liquid tech discovery pulse"
}

Acceptance

• attempted, completed, failed, and visible-output rates can be grouped by schedule_principal;
• mediated provider rounds can be counted separately under the same invocation_id;
• retries/failover do not inflate completed outer-turn counts;
• event/Discord/manual wakes are distinguishable from cron;
• old records remain readable with these fields absent.

Tiverton-side read-only evidence and fallback telemetry script: scripts/desk/turn-telemetry.sh on branch impl/issue-87-restoration.